package config

import (
	"sync/atomic"
	"time"

	"github.com/akyaiy/GSfass/core/config"
)

type StaticConfig struct {
	Enabled   bool   `mapstructure:"enabled"`
	Dir       string `mapstructure:"static_dir"`
	IndexFile string `mapstructure:"index_file"`
}

type BlockConfig struct {
	Enabled  bool   `mapstructure:"enabled"`
	BlockDir string `mapstructure:"block_dir"`
}

type ServerConfig struct {
	StaticConfig   StaticConfig  `mapstructure:"static"`
	BlockConfig    BlockConfig   `mapstructure:"block"`
	Port           int           `mapstructure:"port"`
	Addr           string        `mapstructure:"address"`
	LogPath        string        `mapstructure:"log_path"`
	TimeoutSeconds time.Duration `mapstructure:"timeout_seconds"`
}

type FuncConfig struct {
	FunctionDir string `mapstructure:"func_dir"`
}

type Auth struct {
	RefreshTokenTTL time.Duration `mapstructure:"refresh_token_ttl"`
	AccessTokenTTL  time.Duration `mapstructure:"access_token_ttl"`
}

type Config struct {
	Server    ServerConfig `mapstructure:"server"`
	Functions FuncConfig   `mapstructure:"functions"`
	Auth      Auth         `mapstructure:"auth"`
}

var configPath atomic.Value // string
var defaults = map[string]any{
	"server.port":              8080,
	"server.address":           "127.0.0.0",
	"server.timeout_seconds":   5,
	"server.log_path":          "./logs/server.log",
	"server.static.enabled":    true,
	"server.static.static_dir": "./static",
	"server.static.index_file": "index.html",
	"server.block.enabled":     true,
	"server.block.block_dir":   "./blocks",

	"functions.func_dir": "./functions",

	"auth.refresh_token_ttl": 24 * time.Hour,
	"auth.access_token_ttl":  15 * time.Minute,
}

func read(cfg *Config) error {
	return config.Read().Config().FilePath(configPath.Load().(string)).SetBy(cfg).SetDefaults(defaults).End()
}

func LoadConfig(path string) (*Config, error) {
	configPath.Store(path)
	var cfg Config
	err := read(&cfg)
	if err != nil {
		return nil, err
	}
	return &cfg, nil
}

func ReloadConfig(cfg *Config) error {
	return read(cfg)
}